Combined typewriting and computing machine



Jan. 16, 1923. 1,442,576 W. Fv KEENE COMBINED TYPEWRtTlNG AND COMPUTING MACHINE.

FILED 0m. 29, I920. 2 SHEETSEHEET l 9 amn y WM flzw y W W. P. KEENE. Coma NED TYPEWRI TING AND COMPUTING MACHINE. Fl LED OCT. 29, 1920 Jan. 16, 1923.

2 SHEETS'SHEET 2 Patented Jan. 16, 1923.

UNITED STATES PATENT OFFICE.

WENDELL P. KEENE, OF BROOKLYN, NEW YORK, ASSIGNOR TO UNDERWOOD COM- PUTING MACHINE COMPANY, YORK.

OF NEW YORK, N. Y., A CORPORATION OF NEW COMBINED TYPEWRITING AND COMPUTING MACHINE.

Application filed October 29, 1920. Serial No. 420,339.

To all whom itmay concern:

Be it known that I, VENDELL P. KEENE, a citizen of the United States, residing in Brooklyn borough, in the county of Kings, city and State of New York, have invented certain new and useful Improvements in Combined Typewriting and Computing Machines, of which the following is a specification.

This invention relates to combined typewriting and computing machines settable for addition or subtract-ion, and more particularly to means for changing the state of a machinewvhen the carriage is moved out of a computing zone.

In carrying out the invention, provision may be made of a normally ineffective resetting bar supported at the front of the jack housing or housings of a machine of the Underwood-Hanson type, so that when the machine is set for subtraction, the bar may be moved into effective position by means connected with the subtraction-setting bar. The normally ineffective bar may be pivoted in a pivoted frame and provided with a projection slightly to the right of the jack of highest denominational order in any set, preferably at one letter-space distance therefrom, so that when the pivoted bar is held in operative position by means of the subtraction bar and the carriage backed out of a subtraction zone, a special tappet or dog on the denomination-selector will engage the projection on the pivoted bar and swing the pivoted frame to actuate through suitable connections the motor-trip pin, thereby effecting closing of the motor switch and rendering effective the clutch between the motor and the general operator.

It should be understood that several selectors may be used with one set of jacks or, in other words, with a single register, each selector being provided with a special tappet so that the machine may be restored to an addition setting when the carriage is backed out of a zone in which the mechanism was set for subtraction.

It should also be understood that one or more selectors may be used with a plurality of sets of jacks or, in other words, with a plurality of registers, provision being made of as many projections on the resetting bar as there are sets of jacks, so that the resetting or restoring means will be effective for any register.

Other features and inafter appear.

In the accompanying drawings,

Figure 1 is a side elevation, partly in section, of an Underwood-Hanson computing machine with the invention applied thereto.

Figure 2 is a skeleton perspective view showing the connections between the subtraction bar and the resetting bar, and the connections between the latter and the motor-trip device.

Figure 3 is a detail view, showing the relative positions of a denominational-selecting tappet and a resettin tappet on the same selector, and the relation of these tappets to the jacks and the projection on the resetting bar, respectively.

Figure 4 is a detail view, showing the resetting bar in operative position to enable actuation thereof by a resett ng tappet.

Depression of numeral keys 10 and alphabet keys 11 will actuate key-levers 12 and bell-cranks 13 to swing type-bars 14 upwardly and rearwardly to cause types 15 thereon to co-operate with a platen 16 and effect printing on worksheets carried by the latter. The platen is rotatably mounted in a carriage l'Z urged in a letter-feeding direction by suitable means (not shown).

The movement of the carriage under the action of its urging means is controlled by means of a rack 18 connected with the 'carriage and meshing with a pinion 19 having the usual one-way connection with a ratchet wheel 20. As any one of the type-bars approaches the end of its printing stroke, a shoulder 21 thereon will engage a universal bar 22 and actuate the usual fast and loose dogs 23 and 24, respectively, thereby permitting movement of the ratchet Wheel 20, and, consequently, a letter-space movement of the carriage 17.

Provision is made, at the rear of the machine, of a rod 25 on which one ormoreselecadvantages will heretors 26 may be loosely pivoted, so as to be 26 is provided with a selector tappet or dog 28, which, in passing through a computing zone, engages seriatim the forward ends of jacks 29 pivoted in a housing 30, and, by means of thrust links 31 extending downwardly to levers 32, actuates levers 32, transposition linkages 33 and bell-cranks 34 engaging pins 35 on pin bars or denominational members 36, thereby advancing the latter seriatim to enable digits to be indexed thereon.

Such indexing is effected by depressing index pins 37 from their normal positions. For the purpose of set-ting the index pins, each of the numeral keys from 1 to 9, inclusive, is provided with a pendant or thrust link 38, which, upon depression, will engage an arm 39 on a corresponding shaft 40 of a set, corresponding in number to the links 38, to actuate a corresponding linkage and cause the pin-setting bar 41 thereof to engage and depress a pin, of the same value as the numeral key depressed, on a pin bar which has been advanced from its normal position to bring the pins thereon in alignment with the pin-setting bars 41. This action will be repeated each time a digit is indexed in a different denomination.

When the indexing of a number has been completed, the general operator 42 may be actuated to cause the bar 43 thereon toengage the depressed index pins 37 and advance the pin bars 36 in accordance with the index pins depressed, thereby actuating dial wheels 44 suitably geared to said bars 36, the dial wheels 44 forming part of a register from which the results of computations may be read through a sight-opening 45 in the cas ing of the computing mechanism.

Manual actuation of the general operator may be effected by means of a handle 46 fixed on a shaft 47 ,the movement of the latter by means of the handle being transmitted to the general operator by means of toothed sectors 48 fixed on said shaft,- and pinions 49, meshing with said sectors and with racks 50 on the general operator. The general operator may also be actuated by means of a member.51 engagingin aayoke 52 fixed on the general operator, the movement of member 51 being effected by motor-actuated means which may be in general the same as disclosed in the patent to Wood, No. 1,299,- 646, dated April 8, 1919. To throw the motor-actuated means into operation, a pin 53 may be raised by means of a lever 54 pivoted at 55 on a member 56, the lever 54 and the pin 53 being normally held in depressed position by means of a leaf spring 57. Toeffect this operation, a motor-starting key 58 may be pressed against the resistance of a spring 59, causing a lever 60 to force down the right-hand end of lever 54, thereby lifting pin 53 and rendering the motor effective to reciprocate the general operator,

.bar 68 and thereby permit the latter to be drawn to the rear by means of a spring 69. In lts rearward movement, the subtraction bar 68 will actuate in counterclockwise direction a bell-crank 70 connected therewith by a vpin-and-slot connection. The bell-crank 70 is also connected by-means of a pin-andslot connection to an arm 71 attached to a plate 72 pivoted at its upper edge and having its lower edge projecting into slots in the shafts 40. As a result of the connections just described, the movement of the subtraction bar 68 to the rear will shift shafts 40 forwardly to change the connection between the shafts and the pin-setting linkages in the usual manner. The rearward movement of the subtraction bar 68 will also effect setting of the "9 pins in the usual manner, by means not shown. After the completion of the indexing of a number with the mechanism set for subtraction, the pin bars may be advanced by the general operator and subtraction effected by the complement-a1 method. In a forward movement of the general operator, the bar. 43 thereof will engage a lug 73 on the subtraction bar 68 and advance the same to a position to enable latch 66' to again engage shoulder 67 to retain the subtraction bar in its forward position.

Advantage may be taken of the fact that resetting of the subtraction'bar may be effixed on a shaft 78 supported above the pivots of the denominational jacks 29 by suit able brackets 79 which may be connected with the jack housings. The shaft 78 is pro vided with arms 80 extending forwardly therefrom and supporting a bar 81 provided with one or more cam projections or lugs 82 in accordance with the number of sets of denominational jacks 29. It should be observed that the projections 82 are so shaped that a camming action may be exerted there on during a backing movement of the can riage, by means of a dog or dogs 83, one of which it provided on each of the selectors 26 to be utilized in resetting the machine for addition.

Each dog 83 is provided with an inclined face at the right so as to suitably co-operate with the corresponding projection 82 in the backing movement of the ca'rriage, and is so supported as to ermit yielding in case of contact of its le t-hand face with the projection 82 in the letter-feed movement of the carriage. To this end, each dog 83 is pivoted at 84 in the corresponding selector, and is normally held against the rear wall of the slot in which it is mounted by means of a spring 85, which may geld to permit dog 83 to swing to the right, igure 3, about its pivot 84.

Inasmuch as the mechanism just described has for its purpose to restore the machine to a setting for addition when the carriage is backed out of a subtraction zone, provision is made whereby each rojection82 is normally maintained out o? the path of the dog or dogs 83 and is brought into such path only when the carriage is in a subtraction zone or set for subtraction. To this end bar 81 is'so pivoted in arms that it may be swung out of the path of the dogs 83, the position of the bar 81 being determined by the position of ,the subtraction bar 68'. Upon movement of the subtraction bar'68 to the rear, motion will be transmitted threfrom by means of an arm 86 having a pin-and-slot connection therewith to rock a shaft 87 on which said arm 86 is fixed. When rocked in this manner, the shaft 87 will effect, through an arm 88, a link 89, a bell-crank 90, a link 91, a bell-crank 92 and a link 93, forward movement of bar 81 to effective position, so that backing of the carriage out of a sub traction zone will effect a lifting of the bar 81 to cause the machine to be reset for addition.

It should be understood that the projection 82 associated with a set of jacks 29 is spaced a short distance, preferably about a single letter-space, from the jack of highest denominational order, so that when the carriage is backed out of the zone, the resettin dog or tappet 83 will engage the correspon ing projection 82 and cause actuation of the motor to restore the machine to the state of addition.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.

Having thus described my invention, I claim:

1. In combination, a traveling carriage, computing mechanism normally set for addition, carriage-actuated means for deter mining computing zones, means for setting said computing mechanism for subtraction, and means actuable by said carriage, when backed completely out of a computing zone in which said computing mechanism is set.

:said computin for subtraction, to restore the computing mechanism to a setting for addition.

2. In combination, a traveling carriage, computing mechanism normally set for addition, carriage-actuated means for determining computing zones, means for setting said computing mechanism for subtraction, normally ineffective means whereby backing of the carriage may reset the computing mechanimn to addition, and means whereby actuation of said subtraction-setting means will render said resetting means actuable by the carriage.

3. In a combined typewriting and computing machine, in combination, a traveling carriage, computing mechanism settable to states of addition or of subtraction, carriagecontrolled means for determining computing zones, and a state-controlling mechanism actuable by said carriage and adapted to change the state of said computing mechanism when said carriage is backed out of a computing zone.

4. In combination, a traveling carriage, computing mechanism normally-set for addition, carriage-actuated means for determining computing zones, means for setting mechanism for subtraction including a su traction bar, means, including a bar actuable by said carriage, whereby backing said carriage out of a. computing zone, when said computing mechanism is set for subtraction, w ll restore said mechanism to a settin for addition, and subtraction-bar-contro led means to move said bar to and from position to be actuated by said carriage.

5. In combination, a traveling carria e, computing mechanism normally set or addition, carriage-actuated means for determining computing zones, means for setting said computing mechanism, for subtraction including a subtraction bar, means, including a bar actuable by said carriage, whereby backing said carriage out of a computing zone, when said computing mechanism is set for subtraction, will restore said mechanism to a setting for addition, and subtractionbar-controlled means to determine a resetting of said computing mechanism by the bar forming part of said restoring means.

6. In combination, a traveling carriage, computing mechanism normally set for addition, carriage-actuated means for determining computing zones, means for setting said computing'mechanisml for subtraction including a subtraction bar, means whereby backing of said carriage may effect a change of state of said computing mechanism, and means cont-rolled by the subtraction bar to determine whether the state-changing means shall be effective or ineffective.

7. In combination, a traveling carriage, computing mechanism including preliminary representation devices and a general 120 operator, means to set said computing mechanism for subtraction, a dog mounted on said carriage so as to be ineffective during movement of the carriage in letter-feeding direction but effective when said carriage is backed, a member normally out of the path of said dog, means whereby operation of said subtracting-setting means will cause said member to be movedinto-the path of said dog so as to beac'tuab-le thereby when the carriage is backed, and means whereby actuation of said member. will cause said computing mechanism to be reset for addition.

8. In a combined typewriting and computing machine, in combination, a traveling carriage, computing mechanism settable to states of addition or subtraction, carriage controlled means for determining computing zones, and a state=controlling device normally unaffected by backing of the carriage out of a computing zone, but rendered effective to be actuated by said carriage in such movement when the computing mechanism is set for a certain one of said states so that a setting of the computing mechanism to the other state will be effected.

9. In a combined typewrit-ing and computing machine, in combination, a traveling carriage, computing mechanism settable to states of addition or subtraction, carriagecontrolled means for determining computing zones, and state-controlling means whereby the backing of said carriage out. of a computing zone, when the computing mechanism is set for one of said states, will effect a setting to the other of said states, comprising a tappet on the carriage, a member out of the path of said tappet except when brought to the effective position by proper state-setting of said computing machine, and mechanism whereby movement of said member by said tappet- .will cause said computing mechanism to be set to the other of said states.

10. In combination, a traveling carriage, computing mechanism settable for addition or subtraction, a subtraction bar by which the setting of said computing mechanism may be cont-rolled, a tappet on-said carriage, a shaft mounted in fixed bearings, arms fixed on said shaft extending to positions above the path of said tappet, aresetting bar pivotally supported on the free ends of said arms to enable it to be swung into and out of position to enable a projection thereon to be engaged by the tappet, connections between said subtraction bar and said resetting barwhereby the latter will be effectively positioned when the subtraction bar is positioned for subtraction, and means whereby the rocking of said shaft, due to engagement of said tappet with said projection, will reset said subtraction bar to position for addition.

11. In combination, a traveling carriage,

computing mechanism settable for addition or subtraction, including denomination-selecting means comprising a set of denominational members and a denomination-selector on said carriage to actuate said members seriatim, a resetting tappet on said denomination-selector, a bar having a projection adapted to co-operate with said tappet, said projection being located adjacent the denominational member of highest denomination, supporting means whereby the bar mining computing zones, means for setting said computing mechanism for subtraction including a subtraction bar, and means whereby the carriage, when backed out of a computing zone in which the computing mechanism is set for subtraction, will re store it to a setting for addition, including a resetting tappet on the carriage, a movable member adapted to be actuated by said tappet, and subtraction-bar-actuated means for moving said member to and from BflEt tive position to be actuated by said tappet.

13. In combination, atraveling carriage, computing mechanism normally set for addition, carriage-actuated means for determining computing zones, means for setting said computing mechanism for subtraction, and state-controlling means comprising a shiftable frame, including a member actuable by said tappet when in effective position and movable toand from effective position without actuation of said frame, means to determine whether said member shall be in effective or in ineffective position, and means whereby actuation of said member by said tappet and consequent actuation of said frame will reset said computing mechanism for addition.

14. In combination, a traveling carriage,

computing mechanism normally set for addition, means for setting said computing mechamsm for subtraction including a subtraction bar, denominational selectlng means comprising a set of denominational jacks and a denomination-selector on said carriage to actuate said jacks seriatim, a resetting tappet on said denomination-selector, a movable member adapted to be actuated by said tappet and located adjacent the jack of highest denomination, subtraction-banactuated means for shifting said movable memher to and from effective position with respect to said tappet, and means whereby actuation of said movable member by said resetting tappet will effect resetting of the mechanism to addition when the carriage is backed out of the computing zone determined by said selector and said set of jacks.

15. In combination. a traveling carriage, mmputing mechanism settable for addition or subtraction, including denomination-selecting means comprising a plurality of sets of denominational jacks and a denomination-selmrtor on said carriage to actuate said jacks seriatim, a resetting tappeton said denomination-selector, resetting members adapted to be actuated by said resetting tappet when the latter is moved past the same, each of said resetting members being positioned adjacent the jack of highest denomination in the set with which it is associated, means whereby each of said resetting members will be positioned in the path of said tappet or Withdrawn therefrom in accordance with the setting of said mechanism for subtraction or addition, respectively. and means whereby actuation of any one of said resetting members by said resetting tappet will effect a resetting of said mechanism to addition.

16. In combination, a traveling carriage,

computing mechanism including a denomi' nation-selector on said carriage, denominational jacks actuable seriatim by said seleo tor, index devices selected by said jacks to enable digits to be indexed therein, and a general operator to actuate said index devices in accordance with digits indexed therein, a motor, means whereby said motor may actuate said general operator, a motortrip device to cause said motor to actuate said general operator, subtraction-setting means, a resetting tappet on said selector, and means rendered effective by setting the machine for subtraction whereby, upon backing of said carriage to carry the selector beyond the jack of highest denomination, said resetting tappet will effect the tripping of the motor-trip device, and thereby the resetting of the computing mechanism for ad dition.

WENDELL P. KEENE.

\Vitnesses:

F. A. ROBINSON, J No. P. \ViLsoN. 

